干旱区生态环境知识资源中心(Arid): Appropriate Water-Nitrogen Regulation Mode to Improve Productivity of Mixed-Sowing Grassland of Bromus inermis and Alfalfa

Arid

DOI	10.3390/w15061124
	Appropriate Water-Nitrogen Regulation Mode to Improve Productivity of Mixed-Sowing Grassland of Bromus inermis and Alfalfa
	Kang, Yanxia; Qi, Guangping; Jia, Qiong; Wang, Aixia; Yin, Minhua; Ma, Yanlin; Wang, Jinghai; Jiang, Yuanbo; Tang, Zhongxia
通讯作者	Qi, GP ; Jia, Q
来源期刊	WATER
EISSN	2073-4441
出版年	2023
卷号	15 期号:6
英文摘要	Scientific selection of appropriate herbage planting management mode is an important guarantee to promote artificial grassland development and grassland productivity. In this study, three-year-old alfalfa (Medicago sativa L.) and bromus inermis were applied to analyze the effects of planting patterns (bromus inermis and alfalfa mixed-sowing D1, bromus inermis mono-sowing D2), nitrogen application (pure nitrogen) level (N1: 60 kg center dot ha(-1), N2: 120 kg center dot ha(-1)), and water regulation (upper and lower limits of irrigation are calculated as a percentage of field capacity theta(f), W1: slight water deficit 65 similar to 85% theta(f), W2: moderate water deficit 55 similar to 85% theta(f), W3: serious water deficit 45 similar to 85% theta(f)) on herbage growth and water-nitrogen use efficiency. This research applied the principal component analysis, the TOPSIS model, and the combination evaluation to evaluate each treatment. Results demonstrated that (1) the plant height, leaf area index, and yield of mixed-sowing herbage were 81.63%, 119.52%, and 111.51%, higher than the mono-sowing herbage. Increasing the amount of irrigation and nitrogen application could enhance herbage yield. The herbage yield with the W1N2 treatment was the highest. In this treatment, the mixed-sowing herbage yield was 26,050.73 kg center dot ha(-1), and the mono-sowing herbage yield was 12,186.10 kg center dot ha(-1). (2) The crude protein content of mixed-sowing herbage increased by 41.44%, higher than mono-sowing herbage, and the relative feeding value decreased by 16.34%. Increasing irrigation and nitrogen application could improve the quality of herbage. Meanwhile, the quality of herbage treated with W1N2 was the best. (3) The water use efficiency (WUE), irrigation water use efficiency (IWUE), partial factor productivity of nitrogen (PFPN), and crude protein water use efficiency (CPWUE) of mixed-sowing herbage were significantly higher than mono-sowing herbage. The PFPN and the CPWUE of herbage improved with increasing irrigation amount. Meanwhile, the WUE, the IWUE, and the CPWUE of herbage also improved with increasing nitrogen application amount. The results showed that mixed-sowing of alfalfa and bromus inermis with slight water deficit (upper and lower limit of irrigation was 65 similar to 85% theta(f)) and nitrogen application (120 kg center dot ha(-1)) could have the best comprehensive production effect. At the same time, it was a planting and management mode of high yield, high quality, and high efficiency of artificial herbage in the oasis-desert interlacing area of Hexi, Gansu Province, China, and areas with similar climates.
英文关键词	water-nitrogen regulation yield quality water-nitrogen use efficiency combination evaluation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000958183800001
WOS关键词	USE EFFICIENCY ; FORAGE YIELD ; QUALITY ; IRRIGATION ; FERTILIZER ; COMBINATION ; MANAGEMENT ; REGIONS
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/399006
推荐引用方式 GB/T 7714	Kang, Yanxia,Qi, Guangping,Jia, Qiong,et al. Appropriate Water-Nitrogen Regulation Mode to Improve Productivity of Mixed-Sowing Grassland of Bromus inermis and Alfalfa[J],2023,15(6).
APA	Kang, Yanxia.,Qi, Guangping.,Jia, Qiong.,Wang, Aixia.,Yin, Minhua.,...&Tang, Zhongxia.(2023).Appropriate Water-Nitrogen Regulation Mode to Improve Productivity of Mixed-Sowing Grassland of Bromus inermis and Alfalfa.WATER,15(6).
MLA	Kang, Yanxia,et al."Appropriate Water-Nitrogen Regulation Mode to Improve Productivity of Mixed-Sowing Grassland of Bromus inermis and Alfalfa".WATER 15.6(2023).